Human made channel built to carry water.
The Romans.
Cleopatra VII, createdthe aqeducts and started blueprints for the modern day calendar. As well as building the library of Alexandria and supporting many other scholars.
The Roman's have many major achviements some include: roads, aqeducts, sanitation, irrigation, plumbing, weaponry, architecture, governement, and many more.
The Romans . Master builders, the Romans have aqueducts still standing made in the times of the Cesars.Roads as well, the ancient Appian Way can still be seen inplaces.The aqueducts gave ancient Romans unprecedented access to water for drinking, cooking , crop irrigation , and yes, even baths and indoor plumbing.